Two significant events this month advanced Washington state on its path toward linking its carbon market with the established ...

After a relatively steady summer with petrol prices in the south sound September charged in with sharp increases at the pump ...

Washington state has the highest gasoline prices in the nation, with a gallon costing drivers $1.50 more than the national ...

Washington continues to lead the nation with the highest gas prices, surpassing even California by a fraction of a cent.

Washington state currently holds the highest gas prices in the nation, with the average cost for a gallon of regular gasoline ...

SEATTLE — Washington state now has the most expensive gas in the United States, surpassing California's average price. The ...

California is no longer the state with the highest gas prices in the nation. Washington drivers have it worse now.

Washington state beats out California with an average fuel cost of $4.657 per gallon.

Washington state’s most recent carbon auction brought in an estimated $446 million, according to results released by the ...

You're paying some of the highest gas prices in the country if you're filling up in Washington, where drivers are spending $4 ...

Oregon and Washington have historically had higher gas prices than most of the country. There are several reasons why.

Washington now ranks second in gas prices, with residents facing nearly 45% higher costs per gallon compared to last year.